Lua APA (7ú heag.)

Levin, J. R. (1977). Learner differences: Diagnosis and prescription. Holt, Rinehart and Winston.

Lua i Stíl Chicago (17ú heag.)

Levin, Joel R. Learner Differences: Diagnosis and Prescription. New York: Holt, Rinehart and Winston, 1977.

Lua MLA (8ú heag.)

Levin, Joel R. Learner Differences: Diagnosis and Prescription. Holt, Rinehart and Winston, 1977.

Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.